The product of state-of-the-art technology and extensive real-world testing, Pro Circuit 4-stroke systems boost overall performance with explosive bottom, mid range and peak power. And because they're constructed to withstand event the most abusive conditions, these systems are sure to give you years of unrivaled performance off-road or on the track.
TI-4 AND T-4 GP LOW BOY SYSTEMS
Pro Circuit’s newest systems offer top-of-the-line performance and power
Complete systems from front to back
Ti-4 GP systems feature high-quality grade-two aerospace titanium throughout to provide huge weight savings and unique highlights
T-4 GP systems feature an aluminum canister and high-grade stainless steel mid-pipe
Both are packed with performance features tailored to the demands of serious racers and developed to lower and centralize the machine’s center of gravity, which improves handling and critical clearances
In addition to an instant hook-up under power, the systems also offer huge horsepower gains across the rpm range
Each model has been rigorously track- and dyno-tested to yield peak performance
TI-4 TITANIUM SYSTEMS AND SLIP-ONS
Inspired by the T-4, the Ti-4 system utilizes high-quality grade-two aerospace titanium to provide huge weight savings and unique highlights
Advanced design ensures lightning-quick throttle response and faster, stronger response during hard acceleration
CNC-machined modular end-cap design provides tunable power, with effortless reshaping to the machine’s powerband
Extensively track- and dyno-tested
Silencers include wire-meshed spark arrester that can be removed for closed-course racing
Steel Allen head screws make repacking an easy task
Exclusive E-glass pillow packing
Complete systems come with stainless steel header
Can be used with OEM stock or a Pro Circuit header
T-4 SYSTEMS AND SLIP-ONS
Improved power delivery and exhaust note
Body is made from lightweight 6061 T-6 brushed aluminum and the end cap and intake tube are stainless steel
Tunable end caps allow fine-tuning of power delivery for different types of riding and terrain
Silencers include wire-meshed spark arrester that can be removed for closed-course racing
Steel Allen head screws make repacking an easy task
Exclusive E-glass pillow packing
TYPE 496 SPARK ARRESTER SILENCER
Revolutionary new system uses a longer aluminum body and special internal E-glass packing to lower noise output to legal dB without sacrificing power
Produces an impressive gain in horsepower when compared to OEM
Stainless steel intake tube and FIM-approved end cap
Completely hand-assembled and -welded for a fit and finish that would rival any Factory Works part
